Cost Saving through Operational Optimisation
Without exception, every Operator has the potential to reduce their operational costs significantly. I don’t think anyone would argue with this. But where do we start and how far should we go?
Most will pay invoices, incurring unnecessary expense without realising. Introducing optimisation methods will put potential savings into practice. A company’s campaigns will become more streamlined, putting performance and cost-efficiency firmly in the top quartile.
Invisible losses will become visible, creating the ability to reduce unnecessary expenditure significantly. Clarity is provided, making cost-saving more achievable.
Streamlining processes, saving money on materials here, or a few hours of rig time, there can lead to a significant reduction in expenditure.
The following article will describe methods which have been used with great success, delivering savings of tens of millions of dollars.
The learnings below come from subsurface operations related to drilling wells, but these practices can be applied to just about every business.
Identifying which services are required to ensure an operation runs smoothly is a talent. However, it is not enough to simply tick a box by employing an individual with the right job title. It is essential to identify those capable of providing the required results. When an expert opinion has been given, it must be communicated to the wider team and – after discussion and agreement – implemented. Embracing new ideas is not something most personnel do easily. The benefits and rewards of the new input need to be made clear.
During a drilling campaign where the first wells in the region were suffering severe Well Bore Stability (WBS) problems, a small, known Geomechanics team was engaged. This team provided guidance which in theory would solve the initial wellbore problems. With time the relevant team members were convinced of the value of this guidance, and it was put in to practice. Two to four days were saved on each of the following wells. Further time savings were made throughout the campaign via drilling practice monitoring and improvement.
In this case, it was essential to commission the right team. Their experience, advice and work method proved valuable. The value created by far outweighed the additional cost to the project for this service.
Managing Service Company Inventory
Ensuring the system has no waste is an essential part of the optimisation process. Carefully examine the equipment and consumables required and create a dynamic inventory which caters for those needs.
A three-rig campaign where each rig had backup wireline equipment on site. By placing backup equipment in a central operating base and only taking it to the rig during the operational time, it was possible to considerably reduce the rental for back-up tools and release one full string for each tool type. Tool rental saving was considerable.
It is essential in this case to have the right project people to oversee the logistics and coordination of the service in question.
Utilising Company Scale
Benefiting from the stature of the demand you are creating is an often-overlooked bonus related to the size of your operation. Capitalise on this by looking for the potential value associated with scale.
By taking an overview of regional operations rather than individual rig schedules, it is often possible to benefit from economies of scale. This can take the form of contract discounts or more practically it could mean requiring less charged-for backup equipment in the field.
A Fresh Set Of Eyes
Most Operators have planning systems which are tried and tested. There is, however, always a way in which these procedures can be adjusted to improve their effectiveness or to make them more streamlined. This can be as simple as removing unnecessary content or duplication or completely restructuring planning documents.
During the planning of a multi-rig development campaign, the Mudlogging, Wellsite Geology and DD/LWD services were redesigned in such a way that headcount will be reduced profoundly during the execution phase. By reducing the number of personnel performing geology-related services at the rig, catering, security, logistics and HSE are also affected positively. These redesigns will save the Operator millions of dollars through the Development drilling campaign.
Knowledge Capture & Dissemination
By taking an overview of projects and examining the whole picture, it is possible to create efficiencies simply by being informed. In the drilling business, this information can be captured and spread to the wider team through Drilling Well On Paper (DWOP) and other ‘WOP’ exercises, Knowledge Capture / Lessons Learned sessions and workshops for individual disciplines. The value these exercises create should not be underestimated.
In a project where one company works in many countries, organising regional workshops to be attended by all teams to ensure good practices are adopted throughout the company. These sessions also communicate standard and proficient practices and reinforced the bigger picture of the regional project.
Additionally, Knowledge Capture sessions for entire campaigns for all disciplines related to drilling create massive value to the Operator. In these two or three-day conferences gather personnel associated with: HSE, Drilling Practices, Data Acquisition, Logistics, Communication and Reporting, Contracts and Procurement, Cementing, and Drilling Fluids. The meetings take an informal look at Highlights and Lowlights of the entire process. The outputs are Lessons Learned documents for each discipline which are implemented before future drilling campaigns. These long-term efficiencies provide a safer, cheaper result.
Similarly, the use of Drilling the Well On Paper (DWOP) and Logging the Well On Paper (LWOP) are invaluable tools which pay dividends, through the brainstorming of all salient individuals associated with the well or campaign. One observation from an unlikely direction can lead to significant clarity and efficiency.
Day to Day Operational Adjustments
The Right Person In The Right Place, Again
No matter how efficiently projects are planned, there are inevitably areas where the unforeseen or unpredictable happens. When these outliers show themselves, it is essential that there is an individual supervising the operation who have the experience, knowledge and gravitas to deal with the situation swiftly and without fuss.
During the drilling of a well in the final section. All legal and data acquisition objectives may have been satisfied, but the programme states a Total Depth (TD) of another two hundred meters – a day’s drilling – should be achieved. Here it is essential to have a professional in place with the ability to identify the potential saving. They need to communicate it to those in a position to approve the decision and to instruct the team that there has been a change of plan. Too often, for varying reasons, programmes are followed blindly.
Another common consumer of rig time is formation pressure tests recorded via wireline logging. These data are essential and lead to a greater understanding of the nuances of reservoirs. However, all data acquisition must be planned with an understanding of the end goal and with a sense of financial responsibility. Some subsurface teams can be a little overzealous with their data wish list. It is the job of a good coordinator to ask for a justification for programmes to be reduced if the end goal can be achieved with less data. Pressure test plans have been reduced by half in the past with a more than satisfactory result.
Data Acquisition Rationalisation
I Want vs I Need
Each Operator has a different approach to Data Acquisition. It is essential to engage the team and in particular, the higher level Managers to ascertain the goals. Only when the company’s philosophy is understood can the processes of capturing this data be optimised. Often this is through rationalisation of the programmes.
Rotary Side Wall Cores are often included in data acquisition programmes. The worth of the data these cores provide and their application to the project should be discussed with the Subsurface team involved. On numerous occasions, it is decided these samples are a useful supplement, not a requirement. The runs can be removed from the logging, saving rig time and the service charge, with no adverse effect on the project.
Vertical Seismic Profiles (VSP) in certain situations are revelationary pieces of information which can shed a whole new light on basin analysis. On other occasions, they are time-consuming, costly process which simply confirms what we already know. It is a vital and sometimes difficult process to ensure the team makes the right decision.
We’ve Always Done It This Way
Often companies have guidelines and processes which are outdated or without reasonable justification. By looking at the required deliverables or end use of the data, it is often possible to create efficiencies in the process without affecting the end result. Operator processes can be very emotive. There are often personnel still in place who were instrumental in the creation or moulding of a design process or documentation structure. To convince these individuals, that their pride and joy is inefficient or outdated is a challenging, sometimes impossible task.
A project where fluid sample clean up during wireline operations was stated as requiring the samples to be 95% clean. After some investigation, it was determined that a much-shorted clean-up time would suffice for the analysis required. Two hours of rig time per sample – 12 hours per well in a 35 well programme – were saved.
The reduction in the number of cuttings samples collected and stored during a lengthy campaign was achieved through a simple five-minute discussion. The campaign saved a little on materials, logistical costs and storage. However, over the life of the field, the small annual saving will become significant. Often processes are followed because they are unquestioned remnants of the past. Repeating the same process without question is a common cause of inefficiency.
Operator planning processes and documentation are the elephants in the room. Too often they are convoluted, cumbersome, repetitive or just plain wrong! Forward-thinking companies will allow for these outdated monuments of inefficiency to be reduced without compromising results and streamlined without sacrificing the integrity of the result.
Contract design is an essential cost-saving tool. Service companies tend to make significant profit by invoicing for non-contract items or non-standard contract items. By ensuring Invitations To Tender (ITT) are constructed in such a way that the Operator has as few unplanned items billed, is a simple yet frequently unobserved efficiency. It is not enough to ask the contracts team to create a streamlined contract. There must be input from a technical specialist who thoroughly understands the service.
When engaging a service, look at who the end-users of the product are. It is vital to carry out complete engagement of all of those who may require output from each service and to ensure all potential requirements are catered for in the standard contract. This way, off-contract invoicing is much reduced.
A specific case involved ensuring advanced gas detection equipment which was required by the subsurface team, was provided as a standard deliverable in mudlogging contracts. This simple addition saved the Operator hundreds of thousands of dollars.
Additionally, do your homework and ensure that standard contracts include sufficient sensors for the rigs which are to be used. This sounds like – and is – a very straight forward step. But if a contract is not tailored to the precise scope of work, there is massive room for spending on contracts to grow out of control.
Thorough Tender Evaluation
Contract bids from service companies can often be vague, or even leave out relevant responses which could have financial or operational consequences. Ensuring a thorough evaluation is undertaken will create financial and operational efficiency (which reduces expenditure further).
Very close monitoring of services and invoices associated with contracts is a quintessential feature of contract management. This scrutiny helps to ensure there is no ‘creep’ in contract spending. The task requires time and an in-depth knowledge of the contracts. It’s possible to save hundreds of thousands of dollars through simple contract monitoring.
A mudlogging contract in which the real-time data monitoring licenses up to five were included in the contract. Beyond five, there was a hefty fee per additional license. It is therefore essential – through contract monitoring – to ensure the number of licenses does not exceed five. If there is a requirement for more, write it into the contract at the design phase.
Finally, check invoices carefully. Mistakes are made. It is, therefore, essential to ensure you are paying for what you request and no more. Remove all charges from invoices which are not as per contract or which have been included in error. This is an important final step in contract management.
Manager of Subsurface / Geological Operations / Director with extensive international experience, having worked in 25 countries, with extended time in the UK and Norwegian sectors of the North Sea, East Africa and Azerbaijan.